[PATCH net-next 05/18] net/smc: reserve CHID range for SMC-D virtual device
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STALE1118d
SUPERSEDED
From: Wen Gu <guwen@linux.alibaba.com>
Date: 2023-09-19 14:43:04
Also in:
linux-s390, lkml
Subsystem:
networking [general], shared memory communications (smc) sockets, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, D. Wythe, Dust Li, Sidraya Jayagond, Mahanta Jambigi, Linus Torvalds
Revision v1 of 2 in this series.
Revisions (2)
- v1 current
- v4 [diff vs current]
This patch reserve CHID range from 0xFF00 to 0xFFFF for SMC-D virtual device and introduces helpers to identify them. Signed-off-by: Wen Gu <guwen@linux.alibaba.com> --- net/smc/smc_ism.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h
index 14d2e77..2ecc8de 100644
--- a/net/smc/smc_ism.h
+++ b/net/smc/smc_ism.h@@ -15,6 +15,9 @@ #include "smc.h" +#define SMC_VIRT_ISM_CHID_MAX 0xFFFF +#define SMC_VIRT_ISM_CHID_MIN 0xFF00 + struct smcd_dev_list { /* List of SMCD devices */ struct list_head list; struct mutex mutex; /* Protects list of devices */
@@ -57,4 +60,16 @@ static inline int smc_ism_write(struct smcd_dev *smcd, u64 dmb_tok, return rc < 0 ? rc : 0; } +static inline bool __smc_ism_is_virtdev(u16 chid) +{ + return (chid >= SMC_VIRT_ISM_CHID_MIN && chid <= SMC_VIRT_ISM_CHID_MAX); +} + +static inline bool smc_ism_is_virtdev(struct smcd_dev *smcd) +{ + u16 chid = smcd->ops->get_chid(smcd); + + return __smc_ism_is_virtdev(chid); +} + #endif
--
1.8.3.1